Touched function not getting the humanoid?

local potion = script.Parent
local character
potion.Handle.Touched:Connect(function(hit)
	if hit.Parent:FindFirstChild("HumanoidRootPart") then
		potion.Parent = hit.Parent
		for i,v in pairs(potion:GetChildren()) do
			if v:IsA("Part") or v:IsA("UnionOperation") then
				v.Anchored = false
				v.CanCollide = false
				character = hit.Parent
			end
		end
	end
end)

local humanoid

while wait() do
	if character:FindFirstChild("Humanoid") then
		humanoid = character.Humanoid
		break
	end
end
potion.Activated:Connect(function()
	if humanoid then
		if humanoid.Health <= 99 then
			local info = TweenInfo.new(1)
			local tween = game:GetService("TweenService"):Create(humanoid,info,{Health = 100})
			tween:Play()
			potion:Destroy()
		end
	end
end)

I made a health potion script. It's not getting the humanoid touched, therefore the character is still nil? The activated function works all right. What's the issue here?